Serotonin is formed from which amino acid?
A) phenylalanine
B) tryptophan
C) tyrosine
D) valine
B
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The indigenous religion of Japan is called ________________________.
Fill in the blank(s) with the appropriate word(s).
Explain the statement "the lower down in the food chain we eat, the greater percentage of solar energy we put to use, and the more people Earth can support" in terms of trophic levels and pyramids of energy
What will be an ideal response?
In a moment of dozing while driving in a car at 50 km/h, you bump into a car ahead traveling at 48 km/h in the same direction. The speed of impact is
A. zero. B. 48 km/h. C. 50 km/h. D. 2 km/h. E. 98 km/h.
If a reaction occurs very rapidly, even at a relatively low temperature, which of the following is probably true?
A) The reaction is endothermic. B) The reaction is exothermic. C) The reaction has a low activation energy. D) The reaction occurs as a single step.